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Home >> Mazda >> 2020 >> CX-30 Select, AWD >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (1 Of 4) >> DTC P012F-00: ECT/Engine Oil Temperature - Correlation Error >> Outline
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DTC P012F-00: ECT/Engine Oil Temperature - Correlation Error: Outline

DTC P012F:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location ECT/Engine oil temperature: Correlation error
Detection condition
  • Any one of the following conditions is met, the PCM detects a circuit/range performance problem:
    • The temperature detected by the engine oil temperature sensor after engine start is 15°C {59°F} higher than the temperature detected by ECT sensor No. 1 after engine start.
      • The temperature detected by the engine oil temperature sensor after engine start is -25°C {-13°F} lower than the temperature detected by ECT sensor No. 1 after engine start.

    Precondition

  • The following conditions are met:
    • Period vehicle being left: 6 h or more
    • Battery voltage: 8 V or more
    • The following DTCs are not detected:
  • Engine oil temperature sensor: P0197:00 and P0198:00
  • ECT sensor No. 1: P0117:00 and P0118:00
Fail-safe
  • Not applicable
Possible cause
  • ECT sensor No. 1 connector or terminals malfunction
  • Engine oil temperature sensor connector or terminals malfunction
  • PCM connector or terminals malfunction
  • ECT sensor No. 1 malfunction
  • Engine oil temperature sensor malfunction
  • PCM malfunction
System wiring diagram
  • Not applicable
Connector diagram
  • Not applicable